November 5th, 2007, 7:44 pm
Given the deeply mathematical and highly quantitative nature of equity fund investing, I would think that a new and highly proprietary multi-factor, N-dimensional, hybrid-hyperbolic stochastic volatility and stochastic correlation Ansatz is the basis for establishing 130/30 as the ultimate optimum for a long-short mix.More likely though it is because the MBA in charge of doing the client presenation could not count beyond 130. The true optimum according to my calculations is at 148.15+PI()/sqrt(5).